Basically, with that shell marker I believe you can choose pretty much whatever you want as design or marking wise goes. A label printer would be far more versatile, a lot of boutique shops use them for various products these days. Eley done this before with a batch of 8 gauge loads where they used industrial Remington cases. I will attach a picture you can decide if you like the idea.
So, I just seen the price of that ink roller its around $500. Here is a video though of how it works but I think I prefer the label idea.
https://www.youtube.com/watch?v=4vZcWr6Fc0g